CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 29, 2024	Dec. 31, 2023
Current Assets:
Cash and cash equivalents	$ 406.6	$ 743.9
Accounts receivable, net	730.2	625.0
Short-term contract assets	90.5	59.1
Inventories, net	1,414.5	1,247.5
Prepaid expenses and other current assets	136.6	62.2
Total current assets	2,778.4	2,737.7
Property, plant and equipment, net	1,746.5	1,665.9
Goodwill	227.2	227.2
Other assets	313.7	354.3
Total assets	5,065.8	4,985.1
Current Liabilities:
Accounts payable	528.5	524.8
Short-term contract liabilities	146.5	163.6
Short-term debt and current portion of long-term debt	27.9	31.9
Other current liabilities	242.4	256.8
Total current liabilities	945.3	977.1
Long-term debt	1,855.5	2,147.7
Accrued postretirement benefits	163.8	175.2
Pension liabilities	37.1	39.7
Other long-term liabilities	152.1	164.9
Total liabilities	3,153.8	3,504.6
ATI Stockholders' Equity:
Preferred stock, par value $0.10: authorized-50,000,000 shares; issued-none	0.0	0.0
Common stock, par value $0.10: authorized-500,000,000 shares; issued-142,871,688 shares at September 29, 2024 and 132,300,971 shares at December 31, 2023; outstanding-142,631,508 shares at September 29, 2024 and 126,879,099 shares at December 31, 2023	14.3	13.2
Additional paid-in capital	1,937.8	1,697.1
Retained loss	(72.8)	(70.1)
Treasury stock: 240,180 shares at September 29, 2024 and 5,421,872 shares at December 31, 2023	(13.3)	(184.0)
Accumulated other comprehensive loss, net of tax	(74.6)	(83.2)
Total ATI stockholders’ equity	1,791.4	1,373.0
Noncontrolling interests
Noncontrolling interests	120.6	107.5
Total Equity	1,912.0	1,480.5
Total Liabilities and Equity	$ 5,065.8	$ 4,985.1